Packing-ring for pistons.



A. GIRTANNER.

PACKING RING FOR PISTONS. APPLIGATIONIILED P121119, 1914'.

4 a Patented Sept. 22, 191 i WITNESSES INVENTOI? Afiirtmmer.

, TANNER, a citizen'of the United States of i-tines.

' the passage of the motor fluid. I, therefore ALEXAKQ'HER GIREANNER,

PACKING-RING:

specification o1 ietters Potent.

lf ri ltfh Patented Sept. 22?, 129 1 11.

llpplicatlcn filed February 1.9, 191 2:. serial No. 81.93%.

1h alt who. W may concern:

Be it known that I, ALEXANDER GIR- America, residing at the city of St.Louis, State of Missouri, have invented a certain new and usefulPecking-Ring'for Pistons, of which the following is such a full, clear,and exact description as will enable any one skilled in the art to whichit appertziins to make. and use the some, reference being bad to theaccompanying drawings, forming part of this specification.

My invention relates to packing rings for pistons, and has for itsobject the production of a packing ring which will not be liable toallow the passage of steam or gases be tween the ring and the pistonwhen the ring is in position.

In the accompanying drawings, which illustrate a packing ring made inaccordance with my invention, Figure 1 is a sectional view of a cylinderand piston, showing a. pair of my rings in osition; Fig. 2 is it topplan view of oneo the rings; Fig. 3 is a. side view of one of the rings,one end of one of the parts being broken away; Fig. 4 is a side view ofone part of one of the rings, and Fig. 5 is a side view of the otherpart of the ring.

Like marks of reference refer to similar parts in the several views ofthe drawings.

10 represents a piston arranged in a cylinder 11. The piston 10 isprovided with the usual-rectangular annular grooves 12, in the presentinstance, two in number. In each of these grooves is arranged one of thepiston rings. Each of the piston rings consists of'zt part 13 and apart- 14, the to Acting faces of which are beveled, nsbest hown inFig. 1. Each of the parts 13 and -t of. the ring is divided by a slot inthe usual manner. Theinain object of my invention is to so arrange theseslots that they cannot be brought into alinenient to allow provide thepart 13 with an inclined. slot '5 ntending in one direction, and thepurl 14 with an inclined slot 16 extending in the opposite direction, asshown in Fig. 2/ As shown in Fig. 2, the two parts of the, ring arearranged so as to brin the two slots 15 and 16 as nearly as possi lev inalinement. In this position, however, the projecting point 17 on thepart 13 and the projecting point 18 on the part 14 will overlap throughthe entire depth of the ring, as best shown in Fig. 3, so that even inthe most unfavorable position, the slots will be almost entirely closed.It will; be understood, howev .,1-. that in placing the rings inposition, the two parts should be arranged so that the slots will beentirely out of elinement. In case, however, the slots should workaround tothe position shown in Fig. 2, a very slight leakage of themotor fluid will be allowed.

It has been customary heretofore to prevent the slots in the two arts ofa packing ring being brought into. inement by means of a pin set intoone of the parts and engaging with a recess in the other part. By

my construction, however, I so form the slots that their relativeposition is practically immaterial, and, I, therefore, obviate the useof the pin and thus avoid the weakening of the ring which is consequenton such construction. i

Having fully described my invention, what I claim as new and desire tosecure by Letters-Patent of the United States is:

The combinationwith a piston provided with in-annular groove, of :ipacking ring composed of: two parts placed side by side in said groove,each. of said parts being divided by an inclined slot to produce 0vrlapping points, the co-acting points of t e two parts eitending inopposite directions.

In testimony whereof, I have hereunto set my hand :mdefiixed my seal inthe presence of the two subscribing witnesses.

ALEX. GIRTANNER. c s] \litncsses W. A. ALEXANDER, h. M. SI'HHUL.

